<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" class="addCate" @click="setAddCateDialog">添加分类</el-button>
        </el-col>
      </el-row>

      <!-- 表格 -->
      <zk-table
        :data="cateList"
        :columns="columns"
        :selection-type="false"
        :expand-type="false"
        show-index
        index-text="#"
        border
        :show-row-hover="false"
      >
        <!-- 是否有效 -->
        <template slot="isok" slot-scope="scope">
          <i class="el-icon-success" v-if="scope.row.cat_deleted === false" style="color:green;"></i>
          <i class="el-icon-error" v-else style="color:red;"></i>
        </template>

        <!-- 排序 -->
        <template slot="order" slot-scope="scope">
          <el-tag v-if="scope.row.cat_level === 0">一级</el-tag>
          <el-tag type="success" v-else-if="scope.row.cat_level === 1">二级</el-tag>
          <el-tag type="warning" v-else>三级</el-tag>
        </template>

<template slot="opt" slot-scope="scope">
  <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
  <el-button type="danger"  icon="el-icon-delete" size="mini">删除</el-button>
</template>

      </zk-table>

      <!-- 分页 -->
 <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[3, 5, 10, 15]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
  </el-pagination>
</el-card>

<!-- 添加分类 -->
<el-dialog
  title="添加分类"
  :visible.sync="AddCateDialogVisible"
  width="50%"
  @close="addCateDialogClosed"
  >
<!-- 添加分类的表单 -->
<el-form :model="addCateForm" :rules="addCateFormRules" ref="addCateFormRef" label-width="100px" >
  <el-form-item label="分类名称：" prop="cat_name">
    <el-input v-model="addCateForm.cat_name"></el-input>
  </el-form-item>
  <el-form-item label="父级分类：" >
    <el-cascader clearable
    v-model="selectedKeys"
    :options="parentCateList"
    :props="cascaderProps"
    @change="parentCateChange"></el-cascader>
  </el-form-item>

  </el-form>

  
  <span slot="footer" class="dialog-footer">
    <el-button @click="AddCateDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addCate">确 定</el-button>
  </span>
</el-dialog>


  </div>
</template>

<script>
export default {
  data() {
    return {
      cateList: [],
      queryInfo: {
        type: 3,
        // 页码
        pagenum: 1,
        pagesize: 5
      },
      // 商品分类总数
      total: 0,
      columns: [
        {
          label: '分类名称',
          prop: 'cat_name'
        },
        {
          label: '是否有效',
          type: 'template',
          template: 'isok'
        },
        {
          label: '排序',
          type: 'template',
          template: 'order'
        },
        {
          label: '操作',
          type: 'template',
          template: 'opt'
        }
      ],
      // 添加分类对话框显示与隐藏
      AddCateDialogVisible:false,
      // 添加分类表单
      addCateForm:{
        // 分类名称
        cat_name:'',
        // 分类父 ID
        cat_pid:0,
        // 分类层级
        cat_level:0
      },
      // 添加分类表单验证
      addCateFormRules:{
        cat_name:[
          { required: true, message: '请输入分类名称', trigger: 'blur' }
        ]
      },
      // 父级分类列表
      parentCateList:[],
      // 指定机连选择的配置选项
      cascaderProps:{
        expandTrigger: 'hover',
        value:'cat_id',
        label:'cat_name',
        children:'children',
        disabled:'cat_deleted',
        checkStrictly: true
      },
      selectedKeys:[]

    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    // 获取商品分类
    async getCateList() {
      const { data: res } = await this.$http.get('categories', {
        params: this.queryInfo
      })

    //   console.log(res)

      if (res.meta.status != 200) return this.$message.error(res.meta.msg)

      this.cateList = res.data.result
      this.total = res.data.total
    },
    // 监听pagesize变化
    handleSizeChange(newSize){
this.queryInfo.pagesize = newSize
this.getCateList()
    },
    // 监听pagenum
    handleCurrentChange(newNum){
        this.queryInfo.pagenum = newNum
        this.getCateList()

    },
    // 添加分类按钮
    setAddCateDialog(){
      // 先获取父级分类数据列表
      this.getParentCateList()

        this.AddCateDialogVisible = true
    },
    // 获取父级分类的数据列表
   async getParentCateList(){
      const {data:res} = await this.$http.get('categories',{params:{type:2}})

      if(res.meta.status != 200) return this.$message.error(res.meta.msg);

// console.log(res.data)
this.parentCateList = res.data
    },
    // 选中项变化
    parentCateChange(){
      // console.log(this.selectedKeys)
      if(this.selectedKeys.length > 0){

        this.addCateForm.cat_pid = this.selectedKeys[this.selectedKeys.length - 1]

        this.addCateForm.cat_level = this.selectedKeys.length

      return ;
      }else{
this.addCateForm.cat_pid = 0

        this.addCateForm.cat_level = 0
      }
    },
    addCate(){
      // console.log(this.addCateForm)


this.$refs.addCateFormRef.validate(async valid =>{
  if(!valid){
    return ;
  }
const {data:res} = await this.$http.post('categories',this.addCateForm)
if(res.meta.status != 201) return this.$message.error(res.meta.msg);
this.$message.success(res.meta.msg)
this.getCateList()
this.AddCateDialogVisible = false
})
  

      
    },
    addCateDialogClosed(){
      this.$refs.addCateFormRef.resetFields()
      this.selectedKeys = []
      this.addCateForm.cat_pid = 0
      this.addCateForm.cat_level = 0
    }

  }
}
</script>

<style lang="less" scoped>
.addCate {
  margin-bottom: 15px;
}
.el-cascader{
  width: 100%;
}
</style>